gecko-dev/dom/animation/AnimationTimeline.cpp

53 lines
1.4 KiB
C++

/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "AnimationTimeline.h"
#include "mozilla/dom/AnimationTimelineBinding.h"
#include "nsContentUtils.h"
#include "nsIPresShell.h"
#include "nsPresContext.h"
#include "nsRefreshDriver.h"
#include "nsDOMNavigationTiming.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(AnimationTimeline, mDocument)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(AnimationTimeline, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(AnimationTimeline, Release)
JSObject*
AnimationTimeline::WrapObject(JSContext* aCx)
{
return AnimationTimelineBinding::Wrap(aCx, this);
}
Nullable<double>
AnimationTimeline::GetCurrentTime() const
{
Nullable<double> result; // Default ctor initializes to null
nsIPresShell* presShell = mDocument->GetShell();
if (!presShell)
return result;
nsPresContext* presContext = presShell->GetPresContext();
if (!presContext)
return result;
nsRefPtr<nsDOMNavigationTiming> timing = mDocument->GetNavigationTiming();
if (!timing)
return result;
TimeStamp now = presContext->RefreshDriver()->MostRecentRefresh();
result.SetValue(timing->TimeStampToDOMHighRes(now));
return result;
}
} // namespace dom
} // namespace mozilla